View clinical trials related to Atrial Fibrillation.
Filter by:The objective of this study is to investigate safety and effectiveness of apixaban compared to warfarin in very elderly patients with Non-valvular atrial fibrillation (NVAF). In addition to the absolute age, effects on higher age-related risk factors on relative risk of apixaban to warfarin is also investigated through subgroup analyses.
A prospective single-arm study of ganglionated plexi ablation in cardiothoracic surgery patients with a history of atrial fibrillation.
Researchers are looking for a better way to prevent the formation of blood clots in people who have or have had: - an irregular and often rapid heartbeat - a blocked blood flow to the heart - a blocked or reduced blood flow to a part of the brain. When a blood clot forms in the body in patients with the above conditions, it may block vessels of the heart, the brain and/or other parts of the body. This may lead to heart attack, stroke and other serious complications. Blood clots are formed in a process known as coagulation. This is a complex series of steps that must occur in a specific sequence. Medications are already available to prevent the formation of blood clots. They work by interrupting one or more of the coagulation steps and are therefore known as anticoagulants. They decrease the risk of the above-mentioned complications. The study treatment asundexian works by blocking a very specific step in the blood clotting process, the activation of a protein called Factor XIa. Due to its very specific action that is not thought to be involved in the main blood clotting steps needed to stop bleeding (e.g. like from a cut finger), asundexian is expected to reduce the risk of bleeding that is still seen with existing anticoagulants. Since people who need an anticoagulant may also have liver problems, information on asundexian use in this group is needed. The main purpose of this study is to learn how asundexian moves into, through and out of the body in participants with a mild or moderate reduction in liver function compared to participants with normal liver function who are similar in age, weight, and gender. To answer this question, researchers will measure - the average highest level of asundexian in the blood (also referred to as Cmax) - the average total level of asundexian in the blood (also referred to as AUC). that were reached after intake of a single tablet of asundexian. The researchers will compare these data between participants with reduced liver function and matched participants with normal liver function to look for differences. Each participant will be in the study for up to 4 weeks. Participants will stay in-house for 6 days, starting the day before taking asundexian. In addition, two visits to the study site are planned. During the study, the doctors and their study team will: - do physical examinations - check vital signs - take blood and urine samples - examine heart health using an electrocardiogram (ECG) - ask the participants questions about how they are feeling and what adverse events they are having. An adverse event is any medical problem that a participant has during a study. Doctors keep track of all adverse events that happen in studies, even if they do not think the adverse events might be related to the study treatments.
Atrial fibrillation (AF) is defined as a supraventricular tachyarrhythmia with uncoordinated atrial electrical activation and consequently ineffective atrial contraction. Electrocardiographic characteristics of AF include: irregularly irregular R-R intervals (when atrioventricular conduction is not impaired), absence of distinct repeating P waves, and irregular atrial activations. Different AF classifications have been proposed but, traditionally, four patterns of AF are distinguished, based on presentation, duration, and spontaneous termination of AF episodes. Paroxysmal AF, that terminates spontaneously or with intervention within 7 days of onset. Persistent AF that is continuously sustained beyond 7 days, including episodes terminated by cardioversion (drugs or electrical cardioversion) after >7 days. Long-standing persistent (continuous AF of >12 months' duration) when decided to adopt a rhythm control strategy. Permanent AF, that is accepted by the patient and physician, and no further attempts to restore/maintain sinus rhythm will be undertaken. The purpose of this study is to perform assessments of local impedance before and after cryoablation performed with the new POLAR X cryoballoon, in order to characterize the quality of the lesion and possibly to associate it with the acute success and 12 months AF recurrence-free rate.
The overall objective of this proposal is to evaluate the feasibility of a comprehensive digital atrial fibrillation (AFib) management tool that will empower patients to a) take an active role in learning about AFib management options, starting and adhering to evidence-based therapies and lifestyle changes and b) to guide the patients during AFib episodes which are associated with anxiety and impairment in quality of life. Researchers plan to evaluate the feasibility and preliminary efficacy of this novel digital toolkit in improving quality of life and decreasing AFib burden in a pilot randomized clinical trial (RCT).
This prospective randomized trial aims to compare recovery time from discontinuation of remimazolam followed by flumazenil administration vs. propofol total intravenous anesthesia as the main general anesthetics during radiofrequency catheter ablation treatment of atrial fibrillation.
The primary objective of the study is to reduce hospital admission and decrease time to disposition through establishing an effective treatment protocol for AF and Atrial Flutter in the Emergency Department of Spectrum Health Lakeland. Secondary outcome is to measure if oral diltiazem is an effective HR controlling agent in AF RVR and Flutter.
The Swiss-AF-BURDEN study will be embedded in the follow-up visits of the Swiss-AF cohort study. The research question of the current atrial fibrillation burden will be answered by using 7-day Holter-ECG recordings and continuous implanted loop recorder recording, whereas cardiac MRI examination will give results about cardiac dimensions and function. The 7-day Holter ECG will be repeated after one year. The cMRI will be performed separately or directly after the brain MRI to minimize the additional burden for the patients. Only a subsample of 100 patients will additionally receive ILR for 2 years.
The objective of the study is to evaluate the effectiveness of cognitive training in people with atrial fibrillation and cognitive decline over 12-week cognitive training. Moreover, the investigators will explore whether the training effect can be maintained.
The purpose of this study is to assess the performance and safety for the use of the investigational catheter for intracardiac mapping in the atria and ventricles.